Using xhr.responseType='document' with CORS

## gistfile1.html
<!DOCTYPE html>
<!--
Copyright 2012 Eric Bidelman

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

     http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

Author: Eric Bidelman (ebidel@)
-->
<html>
<head>
<meta charset="utf-8" />
<meta http-equiv="X-UA-Compatible" content="IE=Edge,chrome=1" />
<title>xhr.responseType='document' Test</title>
<style>
body {
  background: url(http://www.html5rocks.com/static/images/html5rocks-logo-wings.png) no-repeat 95% 5%,
              url(http://www.html5rocks.com/static/images/background.png) repeat;
  background-attachment: fixed;
  background-size: 50% 50%, initial;
}
hgroup {
  text-align: center;
  margin-bottom: 20px;
  text-transform: uppercase;
}
.title {
  margin: 0;
  font-weight: 300;
}
ol {
  margin-top: 50px;
  width: 50%;
}
li {
  padding-bottom: 10px;
  margin-bottom: 10px;
  border-bottom: 1px solid #eee;
}
.date {
  font-size: smaller;
}
.summary {
  margin-top: 10px;
}
img {
   height: 75px;
}
</style>
</head>
<body>

<ol><em>Loading articles...</em></ol>

<script>
var xhr = new XMLHttpRequest();
xhr.open('GET', 'http://www.html5rocks.com/en/tutorials/', true);
xhr.responseType = 'document';
xhr.onload = function(e) {
  var doc = e.target.response;

  var container = document.querySelector('ol');
  container.innerHTML = ''; // clear out.

  var articles = doc.querySelectorAll('.articles-list li');

  var frag = document.createDocumentFragment();
  [].forEach.call(articles, function(art, i) {
    var title = art.querySelector('.title');
    var summary = art.querySelector('.description');
    var date = art.querySelector('.date');

    var li = document.createElement('li');
    li.appendChild(title);
    li.appendChild(date);
    li.appendChild(summary);
    frag.appendChild(li);
  });

  container.appendChild(frag);
};
xhr.send();
</script>
</body>
</html>
	<!DOCTYPE html>
	<!--
	Copyright 2012 Eric Bidelman

	Licensed under the Apache License, Version 2.0 (the "License");
	you may not use this file except in compliance with the License.
	You may obtain a copy of the License at

	http://www.apache.org/licenses/LICENSE-2.0

	Unless required by applicable law or agreed to in writing, software
	distributed under the License is distributed on an "AS IS" BASIS,
	WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	See the License for the specific language governing permissions and
	limitations under the License.

	Author: Eric Bidelman (ebidel@)
	-->
	<html>
	<head>
	<meta charset="utf-8" />
	<meta http-equiv="X-UA-Compatible" content="IE=Edge,chrome=1" />
	<title>xhr.responseType='document' Test</title>
	<style>
	body {
	background: url(http://www.html5rocks.com/static/images/html5rocks-logo-wings.png) no-repeat 95% 5%,
	url(http://www.html5rocks.com/static/images/background.png) repeat;
	background-attachment: fixed;
	background-size: 50% 50%, initial;
	}
	hgroup {
	text-align: center;
	margin-bottom: 20px;
	text-transform: uppercase;
	}
	.title {
	margin: 0;
	font-weight: 300;
	}
	ol {
	margin-top: 50px;
	width: 50%;
	}
	li {
	padding-bottom: 10px;
	margin-bottom: 10px;
	border-bottom: 1px solid #eee;
	}
	.date {
	font-size: smaller;
	}
	.summary {
	margin-top: 10px;
	}
	img {
	height: 75px;
	}
	</style>
	</head>
	<body>

	<ol><em>Loading articles...</em></ol>

	<script>
	var xhr = new XMLHttpRequest();
	xhr.open('GET', 'http://www.html5rocks.com/en/tutorials/', true);
	xhr.responseType = 'document';
	xhr.onload = function(e) {
	var doc = e.target.response;

	var container = document.querySelector('ol');
	container.innerHTML = ''; // clear out.

	var articles = doc.querySelectorAll('.articles-list li');

	var frag = document.createDocumentFragment();
	[].forEach.call(articles, function(art, i) {
	var title = art.querySelector('.title');
	var summary = art.querySelector('.description');
	var date = art.querySelector('.date');

	var li = document.createElement('li');
	li.appendChild(title);
	li.appendChild(date);
	li.appendChild(summary);
	frag.appendChild(li);
	});

	container.appendChild(frag);
	};
	xhr.send();
	</script>
	</body>
	</html>